Contributors | Affiliation | Role |
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Broenkow, William | Moss Landing Marine Laboratories (MLML) | Principal Investigator |
Chandler, Cynthia L. | Woods Hole Oceanographic Institution (WHOI BCO-DMO) | BCO-DMO Data Manager |
S4 Current Meter Observations on MLML Particle Trap
PI: William Broenkow of: Moss Landing Marine Laboratory (MLML) dataset: S4 Current Meter Observations on MLML Particle Trap dates: May 18, 1989 to June 07, 1989 location: N: 59.8117 S: 46.24 W: -20.7483 E: -17.68 project/cruise: North Atlantic Bloom Experiment/Atlantis II 119, leg 5 ship: R/V Atlantis II
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current_meter.csv (Comma Separated Values (.csv), 22.74 KB) MD5:a65f5d4357eb14471d4969bca166406a Primary data file for dataset ID 2579 |
Parameter | Description | Units |
date | Date of S4 time series, as YYYYMMDD | |
time_dec | Time of day of S4 time series | GMT decimal hours |
time_gmt | Time from Midnight 22 April 1989 | GMT decimal hours |
lat | North Latitude of Trap Mooring | decimal degrees |
lon | West Longitude of Trap Mooring | decimal degrees |
temp | Temperature | degrees C |
press | Pressure | decibars |
moor_vel_north | Mooring Velocity North (V) Component | cm/sec |
moor_vel_east | Mooring Velocity East (U) Component | cm/sec |
moor_speed | Mooring Speed | cm/sec |
moor_dir | Mooring Direction | degrees Magnetic |
curr_north | Relative Current North (V) Component, measured by S4 at 160 m | cm/sec |
curr_east | Relative Current East (U) Component, measured by S4 at 160 m | cm/sec |
curr_speed | Relative Current Speed, measured by S4 at 160 m | cm/sec |
curr_dir | Relative Current Direction measured by S4 at 160 m | degrees Magnetic |
curr_vel_north_abs | Absolute Velocity North (V) Component, sum S4 relative + mooring | cm/sec |
curr_vel_east_abs | Absolute Velocity East (U) Component, sum S4 relative + mooring | cm/sec |
curr_speed_abs | Absolute Current Speed, sum S4 relative + mooring | cm/sec |
curr_dir_abs | Absolute Current Direction, sum S4 + mooring | degrees Magnetic |
Dataset-specific Instrument Name | S4 Current Meter |
Generic Instrument Name | Interocean S4 Current Meter |
Dataset-specific Description | An S4 Current Meter (InterOcean Systems, Inc) was mounted on the MLML Particle Trap. |
Generic Instrument Description | The InterOcean S4 current meter is a basic electromagnetic current meter with two pairs of internal electrodes and a flux-gate compass with an integral data logger. The S4 current meter is designed to directly measure with high precision the true magnitude and direction of current motion using two pairs of titanium electrodes located symmetrically on the equator of the sensor. An internal flux-gate compass provides heading information, used to reference current direction to magnetic North or, for fixed installations, the instrument may be operated in an X-Y orthogonal mode whereby the current vector can be referenced to a landform or structure. For more info, see www.interoceansystems.com/s4main.htm. |
Website | |
Platform | R/V Atlantis II |
Start Date | 1989-05-15 |
End Date | 1989-06-06 |
Description | late bloom cruise; 31 locations; 61N 22W to 41N 17W Methods & Sampling PI: William Broenkow of: Moss Landing Marine Laboratory (MLML) dataset: S4 Current Meter Observations on MLML Particle Trap dates: May 18, 1989 to June 07, 1989 location: N: 59.8117 S: 46.24 W: -20.7483 E: -17.68 project/cruise: North Atlantic Bloom Experiment/Atlantis II 119, leg 5 ship: R/V Atlantis II |
One of the first major activities of JGOFS was a multinational pilot project, North Atlantic Bloom Experiment (NABE), carried out along longitude 20° West in 1989 through 1991. The United States participated in 1989 only, with the April deployment of two sediment trap arrays at 48° and 34° North. Three process-oriented cruises where conducted, April through July 1989, from R/V Atlantis II and R/V Endeavor focusing on sites at 46° and 59° North. Coordination of the NABE process-study cruises was supported by NSF-OCE award # 8814229. Ancillary sea surface mapping and AXBT profiling data were collected from NASA's P3 aircraft for a series of one day flights, April through June 1989.
A detailed description of NABE and the initial synthesis of the complete program data collection efforts appear in: Topical Studies in Oceanography, JGOFS: The North Atlantic Bloom Experiment (1993), Deep-Sea Research II, Volume 40 No. 1/2.
The U.S. JGOFS Data management office compiled a preliminary NABE data report of U.S. activities: Slagle, R. and G. Heimerdinger, 1991. U.S. Joint Global Ocean Flux Study, North Atlantic Bloom Experiment, Process Study Data Report P-1, April-July 1989. NODC/U.S. JGOFS Data Management Office, Woods Hole Oceanographic Institution, 315 pp. (out of print).
The United States Joint Global Ocean Flux Study was a national component of international JGOFS and an integral part of global climate change research.
The U.S. launched the Joint Global Ocean Flux Study (JGOFS) in the late 1980s to study the ocean carbon cycle. An ambitious goal was set to understand the controls on the concentrations and fluxes of carbon and associated nutrients in the ocean. A new field of ocean biogeochemistry emerged with an emphasis on quality measurements of carbon system parameters and interdisciplinary field studies of the biological, chemical and physical process which control the ocean carbon cycle. As we studied ocean biogeochemistry, we learned that our simple views of carbon uptake and transport were severely limited, and a new "wave" of ocean science was born. U.S. JGOFS has been supported primarily by the U.S. National Science Foundation in collaboration with the National Oceanic and Atmospheric Administration, the National Aeronautics and Space Administration, the Department of Energy and the Office of Naval Research. U.S. JGOFS, ended in 2005 with the conclusion of the Synthesis and Modeling Project (SMP).
Funding Source | Award |
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National Science Foundation (NSF) |